Mabble-sawistcr machine



emma STATES' PATENT carica IRA CARTER, OF MALONE, NEW YORK.

MARBLE-SAWING MACHINE.

Specification of Letters Patent No. 15,328, dated July 15, 1856.

To all whom it may cof/wem."

Be it known that I, IRA CARTER, of Malone, in the county of Franklin andState of New York, have invented a new and Improved Machine for SawingMarble Blocks in Polygonal Taper F orm; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the annexed drawings, making a part of this specification,in which- Figure 1, is a longitudinal vertical section of myimprovement, the plane of section passing through the center. Fig. 2, isa horizontal section of ditto, Fig. 1, showing the plane of section.

Similar letters of reference indicate corresponding parts in the twofigures.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it.

A, represents a bed piece or flooring on which a rectangular frame B, issecured and C, is a horizontal saw frame or gate which is suspendedwithin the frame B, by chains (a), which pass around shafts D, D, placedon the upper part of the frame B, as shown in Fig. l.

To one end of the saw frame or gate C, there are attached by pivots (a),connecting rods E, E, one at each side of saw frame or gate. Theseconnecting rods extend as far as the opposite end of the frame or gate,and are attached by pivots (b), to the lower ends of arms F, F, whicharms are attached to a transverse shaft G, on the frame B. This shaftGr, has a vibrating or rocking motion given it by means of a crank (o),pitman (d), and arm (e), as shown in Fig. 1. At each end of the sawframe or gate C, a shaft H, is placed, said shafts being fitted insuitable bearings attached to the frame or gate, and to one end of eachshaft H, a permanent arm I, is secured.

To one end of each of the shafts D, on the upper part of the frame B,there is attached a bevel wheel J. These wheels gear into bevel pinionsK, K, on a shaft L, at one side of the upper part of the frame. Anotherpinion M, on the shaft L, gears into a wheel N, the aXis (f), of whichpasses through one of the side pieces (g), of the frame B, and has apinion (it), upon it, which pinion gears into a vertical rack O, securedto a sliding frame P, which works on guide rods (L), (L), attached tothe side piece (g), see Fig. 1.

To the sliding frame P, there is attached an arm Q, to which the innerends of two rods R, S, are attached by pivots The outer ends of the rodsR, S, are attached to the arms I, I, the rods having each a socket (j),at their ends attached by pivots said sockets fitting on the arms I, andsecured at any desired points by set screws.

The shafts H, H, have arms T, placed upon them, two on each shaft. Thearms are secured upon the shafts by set screws so that they may beadjusted upon the shafts at varying points. The upper ends of the armsT, are attached by pivots (k), to hori- Zontal levers (l), and the innerends of the levers (Z), are connected by pivots (m), to bent or rightangled levers (n), the inner ends of which have segment racks (0), uponlthem which racks gear into racks (p), se-

cured within the end pieces (r), of the saw frame or gate C, see Fig. 2.The racks (p), may be shifted or adjusted at different points within theend pieces. To the inner ends of the bent or right angled levers (n),there are attached saws V, and saws V, are attached to the end pieces(r), of the saw frame or gate. To one end of the shaft L, a pulley W, isattached and a chain X, passes around it, said chain having a weight orcounterpoise Y, at its lower end.

Operation: The marble block to be sawed is placed upon the bed piece oriooring A. The saw frame or gate C, being raised, and the saws V, V, areset angularly with each other, to correspond with the taper intended tobe given the sides of the block, by adjusting the levers (Z), (n), racks(p), and arms T. Motion is then given the crank (c), in any propermanner and a reciprocating motion is given the saw frame or gate C, anda lateral vibrating movement is given the saws V, V, by means of thearms I, T, levers (l), (n), and racks (10), and the saws V, willconsequently cut angularly with the sides of the saw frame or gate andthe saws V, V, will cut parallel with the sides of the frame or gate.

The saws are fed to their work by the weight of the frame or gate, andthe rods B, S, are allowed to descend, their inner ends, with the sawsby means of the rack O, in the sliding frame P, which is operated by thewheel N, and pinions M,

By the above invention it will be seen that two sides of a marble blockwill be sawed at the same time and in taper form, and the being operatedby means of the rods R, S, attached tosliding frame I), vin Combinationwith arms I, T, levers (l), and racks (o), (p), when constructedarranged 15 and operated substantially as shown and described.

IRA CARTER.

Witnesses:

M. D. MERKER, HENRY HUTGHINS.

